I just harvested a few of these Dec. 30th from my unheated greenhouse (zone 5). They are very sweet and juicy. I had given up growing carrots due to our clay soil, but I thought these might do well in the raised beds in my greenhouse. I don't know how they would do with Spring planting, but for Fall they have held up wonderful and are a nice treat.

I really enjoyed this carrot. They were easy to grow, and has a sweet taste. I pulled some throughout the growing season, and the carrots were about 6-8 inches long. I did my final harvest on 11/17 and some on my carrots were massive. My late season carrots were about 9-12 inches long and very thick. No issues with spitting at all, but some carrots did fork.
I plan to grow this carrot again.